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Finding the Fourth Proportional to 605,261.80, 907,892.70 and 393,754.60

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Solution

The fourth proportional to 605,261.80, 907,892.70 and 393,754.60 is: 590,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,261.80 : 907,892.70 = 393,754.60 : x
  2. Step 2: Convert to fraction form
    605,261.80/907,892.70 = 393,754.60/x
  3. Step 3: Cross multiply
    605,261.80x = 907,892.70 × 393,754.60
  4. Step 4: Simplify right side
    605,261.80x = 357,486,926,931.42
  5. Step 5: Solve for x
    x = 357,486,926,931.42/605,261.80
  6. Step 6: Final answer
    x = 590,631.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.